Rotary valve.



C. W. COMSTOCK. ROTARY VALVE'. APPLICATION FILED )UNE 30.1917.

PatentedNov. 27, 1917.

2 snEiTswsHEsr 2.

ATTORNEYS UNITED STATES- PATENT OFFICEi CHARLES W. COMSTOCK, 0F DILLEY, OREGON, ASSIGNR OF ONE-HALF T0 RUUS G.

BAYER, 0F NATICK, MASSACHUSETTS,

ROTARY VALVE. K

Specification of Letters Patent.

Pai enter] Nov. '101 T.

' j I Application filed .Tune 30, 1917. Serial No. 177.948,

To all whom t may concern:

Bo it known tlnit l', CirAnLns W. COM- s'rooi, n citizen ol.' the United Stilles, :ind a resident of Dillcy, .in thv' county of Washington und Stute of Origon, have invented n non' and Improved Rotary Valvo, of which 'the following is n full, clear, and rxnnt drscription.

'llio invention .relates to internal combustion cengi'invs, :ind its object is to provide n new and improvcil rotnry vulve arranged to control the admission oi the explosivo n1ixture :1nd tho xlmnst of the spent gases in nn oxritdingly simple, vtl'mftivo sind practically noisnlcss manner, und to insure proper ignition of ihn olnirgos ln order to accomplish the desired result, use is :nudo of :1 valve body having' :i cylindrioafl here,x providnd with :in inlet p0rt,nn

exhast port and two Cylimlcr ports for nach cylinder, ono of the cylinder ports being in longitudinal nlinomont with the. inlet port,

.and the'otlier cylinder port being iii-longitudinal nlincment with thel Suid exhaust port, and :i tubular .valve mounted to rotate, in the said valve body and driven from the engine shaft, the said vulve having chfimhrs, one for nach cylinder, :ind provided with tivo ports ono. arranged alongside the other and ndzil'itod to register alternately with. the sets o'l' nlincd ports 4in the snid vulve body.

A. 'przxcliifnl (.iniiodnnrnt of theV :invention vulvn :is :ipplind` to i1. al-Cylinder internal combustion engine, pnrts-hing Shown in section ';4

' .Fi 2, .is a, cross section of` the saine on thc'hno PM2 ofi-Fig. 4;

Fig. 3 is ai Siinilzifrviow of the same on the. lino ot ,-Fig. 4;

Iiq. fliri a1 soctionnlplnn View of the slime onvtlio lino a1- :i of Fig'. Bn nd with the valve omitted; :1nd

Fig, 5 is i1 plnn View of tho valve.

The in'iprovcd rotary vulve is Shown upplind loV nnintnrnnl combustion angina having jonr c vlindrrs 1 0, il, 1Q, :1nd 13 in which rcfiprocnto pistons 1l, l5, '1G and 17 ronnectcd in tho nsnzil innnnor hy iitinen 1S with crijinlis 119 of n ornnli slnvl't The, crunkS 19 for" the several pistons are ar ran fed in the nsnnl ninnnrr on tho engine I slintt 20 so tlm( Iwo ol' tln` pistons reciprocuto fsiinliltnnconsl)y in ono iliroction 11nd thi.l other two pistons travel sii iiltniinonsly-in oppositiA dirortions,'ns will lii rvndily nndorstood liv refe-renc@ 1.o Fig. l. 'llin f'ylinder honds 2l, 22, J3 and 2l for (lio suvornl cylin ders JIU, ll, 'l2 sind 12S :1ro prolernl'ily in one` mistingr logutlior with n tnljnlnr vnlvo lioily 23 havin;Y :i i-"vlinilrirnl hor@ in which rotnli-s :i tnlinlnr vulve 2t, (inronlnr vnd ot this vnlvil 21'; connorl-ml with tho ongino slni'l't E() lo rolnln ille vnlvrv 2G nl. this into of 2 to l rnlnlivr to llio rotntion oi tlio ongino slm llt iii). '.l'lio. ronnm-lion lictwoon t-lic. vzilvo nl; nml th( Qnnjinie slnilt zo inny l1f,I of any dom-1l lynn, suoli., -tor insinuar, :is sprocket 'ivlioifls il' und 2S and :i sprorlut chnin 29, but l do not limit niysclt to this particular driving means for tho valve 2G.

- The valve body 25 is providod, Vfor each cylinder, with two cylinder port-s 40 and 41 disposed on opposite sides of the'iixis of 'the Cylinder, :is will lio rciidiljy'A understood by inferi-,nce to 2, 3 :1nd '-jl. The ports 4() :1nd 4l nrc not in transverse alinemont, 212s plainly'indicated in Fig'. 4l, 1nd alongside the port. V-l-O nml opposite the port 41 is ar ranged nn inlet port l2 nonnortod byi :rpipe 43 with tin` manifold. Alongside the cyliir. dor port ai] and @pinos-ilo tho cylinder port #fois nrrnng'ml :in oxlmnsl; port connect-d with :in exhaust pipn 421. Thi. iifylindcr `ports fl-l) nnil -ll land to tln ivnrlcing chamber 46 toi-nml in tho hond. "3,1, 22, 23 or 9,4 of thc. corrnspondiinij cylinder 10, 11,12 and 13. Each cylindvr port rt() is: iinfovidud with u spark plug .17 or otlie'r suitable igniting dovico.

The cylindrical' vulve Zt-is provided with n chamber 5() for nach cylinder, and onch` olnnnhcr' {iO-is provided with. two ports 51. sind 5&5 arranged ononlongrsido tho other.` 'Ihn port 5i is adapted to rogistor 'Sl1cces rsivclg.l with tlio ports -i-l, all, and tho port 52 is adapted to register sliri'zyessivoly with the ports .i-O and 4l, i The. operation is :is follows: ill/'l10n the engilnis running' nnil thv t11- lnilnrr vzilvo 26 is rotating' in tlnl direct-ion ot the arrows (srv Figs. 2 nml 3) thun thv vulve port-` rl :unl 52 lirst. rvgistrr with thoI ports l2. l() to purinitlln rxplosivn olmrgo tdlniss from tlw mnnit'old into llncorrosponding clmxnber 50 by wav 0i' the port 42 and then through the port 40 into the working chamber 46 of the corresponding cylinder at the time the piston therein is at the downward or suction stroke. During the return stro'lie pl the piston, the ports 51, 52 are in closed position and the charge is coolnpressed,1'ir7'tl1e cylinder and ignited, and when the piston reaches the end ol its power stroke the Aports' 51., 52 move into register with the ports ll, il so that on the return stroke of the piston the spent-gases are forced. out of the cylinder by way olE the pori; il, the corresponding chamber o and the port il vwhich leads to the exhaust pipe 45. lt is understood that the described operation oi the -valvc is the same for each cylinder, only in theI -proper sequei1ce,-ac coi-ding to the successive impulses to be given to the Apistone` 1.4,- li., .lo and li.

By reference to the draw-ving: it will lie noticed that the valve body Tand [he cyl* inder heads 2l, 22? i2- and 'il are provided with a common water i Jacket (il.) connected at one end (i1 with the radiator for eircu lating the water through the waterl jacket G0.

It will be noticed that li'v the arrangement described the admission ol .the explosive mixture to the working chamber and the exhaust of the-spent gases is ellected in a simple and practically noiseless manner.

It will also be noticed that: the rotary valve mechanism shownaod described is exceedingly simple as it requires but a sin glo bore 'in the valve easing and a single tubular ,valve rotating in said bore to supply the several cylinders with thel motive agent and to conduct the spent gases i'roin the cylinder.

The valve mechanism shown and described can be cheaply niauuiactured, and with (he. cylinder headsl can lie readily water cooled by making the valve body and the ovlinder heads in one single piecez Having thus deserilied my invention, l claim as new and desire lo secure b v Letters Patent:-

1. In an internal ei'unbustion engine` a cylinder provided with a working chamber,-

.a, piston reciprocating inl the said cylinder, a valve body having a cylindrical bore provided withvaninlet port, an exhaust port and'two cylinder ports, of-whicli one is in longitudinal ahncment with the said Inlet port and the other is in longitudinal alinenient with the said exhaust port,and a tubular valve n'iountedvto rotate in the said valve body and driven from the engine shaft, the said valvehaving a chamber provided` with two ports one arranged alongside the other and adapted to register alternately nth the said sets of longitudinally alined ports in the said valve body.

2. In an internal combustion engine, a eylii'ider provided with a working chamber, a piston reciprocating in the said cyiinder, a valve body having a cylindrical bore provided with an inlet port,'an exhaust port and two cylinder ports, ot' which one is in longitudinal alinement ,with the said inlet port and the other is inl longitudinal alinenient with the said exhaust port, a tubular valve mountedjto rotate in the said valve body and driven .troni the engine shaft, the said valve having a. chamber provided with two ports one arranged alongside the other and adapted to register alternately with the said setsot` longitudinally alined ports in the said valve body, and an ignition device in the said cylinder. port alined with the inlet port. v

3. In an internal combustion engine, a plurality of cylinders, a valve body Ahaving cylinder heads formed thereon to close the' said cylinders, the said valve body being provided with a cylindrical bore havinga 85 set of inlet ports, one for each cylinder, and connected with a manifold, a set .of exhaust ports, one for each cylinder', and two cylinder ports for each cylinder, one cylinder port being alongside a corresponding inlet port and the second cylinder port being arranged alongside the corresponding exhaust port, and a tubular rotary valve. mounted to turn in the said bore and provided with spaced chambers one -for each cylindeneach chamber having two ports arranged one alongside the other, the said ports in oneposition of the valve registering with the said inlet port and its adjacent cylinder port, and the said valve ports in another positionof the valve registering with the said exhaust port and its adjacent cylinder port. and means forl rotating the said valve fronrthe .engineI shaft.

CHARLES W. COMSTOG-Ki 

